Ms Giddings has said she has doubts about how the plan would apply to local schools.

"There's big gaps in it at the moment with regulations that we haven't seen and we don't know how the system will work," she said.

"We don't want to sign up to something which indeed could see a potential future education minister in Christopher Pyne dictating to all the states that they have to put money into flagpoles and national anthems."